Carrel unit



FIG. 1 is a perspective view of a carrel unit showing my new design, the broken line showing of a chair is for illustrative purposes and forms no part of the claimed design;

FIG. 2 is a left side elevational view, the right side being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view the rear being flat and unornamented;

FIG. 5 is a perspective view of a modified form of the carrel unit shown in FIG. 1;

FIG. 6 is a left side elevational view, the right side being a mirror image without the stairs;

FIG. 7 is a top plan view thereof; and

FIG. 8 is a front elevational view, the rear being a mirror image thereof. 

The ornamental design for a carrel unit, as shown and described. 